Echo is an enhancement system that allows you to use duplicate Medallions to permanently increase their stats. The higher the Echo level, the stronger your Medallion becomes.
There are 8 Echo levels in total. Each level requires a certain number of duplicates to upgrade:
- Level 1: 1 duplicate (2 medallions total)
- Level 2: 2 duplicates (4 medallions total)
- Level 3: 2 duplicates (6 medallions total)
- Level 4: 5 duplicates (11 medallions total)
- Level 5: 5 duplicates (16 medallions total)
- Level 6: 10 duplicates (26 medallions total)
- Level 7: 10 duplicates (36 medallions in total)
- Level 8: 15 duplicates (51 medallions in total)